1. Yikuphi ukusetshenziswa okuyinhloko kwe-hydroxypropyl methyl cellulose?
I-HPMCisetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinhlaka zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lezimboni, ibanga lokudla kanye nebanga lezokwelapha ngokusho kokusetshenziswa.
2. IHydroxypropyl methyl cellulose ihlukaniswe yaba izinhlobo eziningana, yini umehluko phakathi kwazo?
I-HPMC ingahlukaniswa ibe esheshayo (isijobelelo somkhiqizo "S") kanye ne-hot encibilikayo, imikhiqizo esheshayo, emanzini abandayo ahlakazeke ngokushesha, anyamalale emanzini, ngalesi sikhathi uketshezi alunayo i-viscosity, ngoba i-HPMC isanda kuhlakazeka emanzini, akukho ukuchithwa kwangempela. Cishe imizuzu emi-2, i-viscosity ye-liquid ikhula kancane kancane, yenza ijeli ecacile futhi enamathele. Imikhiqizo encibilikayo ekushiseni, ehlanganiswe emanzini abandayo, ingahlakazeka ngokushesha emanzini ashisayo, inyamalale emanzini ashisayo, njengokwehla kwezinga lokushisa liye ezingeni lokushisa elithile (ngokwezinga lokushisa lejeli lomkhiqizo), i-viscosity ibonakala kancane, kuze kube yilapho kwakheka i-viscous colloid ebonakalayo.
3. Unganquma kanjani ikhwalithi ye-hydroxypropyl methyl cellulose kalula nangokunembile?
1) ubumhlophe, nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC yinhle yini, futhi uma yengezwa ku-whitener yenqubo yokukhiqiza, izothinta ikhwalithi yayo, kodwa, imikhiqizo emihle ikakhulukazi ubumhlophe buhle.
2) ubucwebe: Ubucwebe be-HPMC ngokuvamile buwu-80 mesh kanye ne-100 mesh, i-120 inhloso encane, ukucolela kuba ngcono.
I-3) ukudlulisa ukukhanya: I-HPMC emanzini, yenza i-colloid ebonakalayo, bheka ukukhanya kwayo, ukungena okukhudlwana kokuhle, chaza i-insolubles encane ngaphakathi, igedlela lokusabela eliqondile ngamadigri ngokuvamile lihle, lizothumela elinye igedlela lokusabela elivundlile, kodwa alikwazi ukuchaza ukuthi ikhwalithi yokukhiqiza yeketela eqondile ingcono kunezici eziningi zokukhiqiza ezinquma ukuthi umkhiqizo ungcono kunezici ze-kettle.
4) isilinganiso: ingxenye enkulu, esindayo kangcono, kunenkulu, ngokuvamile ngenxa yokuqukethwe okuphezulu kwe-hydroxypropyl ngaphakathi, okuqukethwe kwe-hydroxypropyl kuphezulu, ukugcinwa kwamanzi kungcono.
4. Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methyl cellulose?
1) Wonke amamodeli angengezwa kundaba ngendlela yokuxuba okomile;
2) Udinga ukungezwa ngokuqondile kwisisombululo samanzi okushisa okuvamile, kungcono ukusebenzisa ukuhlakazeka kwamanzi abandayo, ngemva kokungeza ngokuvamile emaminithini angu-10-90 ukushuba (goqa isiyaluyalu)
I-3) Amamodeli avamile angancibilika ngemva kokuxuba nokuhlakazwa ngamanzi ashisayo bese wengeza amanzi abandayo ngemva kokugqugquzela nokupholisa;
I-4) Uma kuqedwa, uma kwenzeka i-agglomerating, kungenxa yokuthi ukugqugquzela akwanele noma imodeli evamile yengezwe ngokuqondile emanzini abandayo. Ngalesi sikhathi, kufanele ixutshwe ngokushesha.
I-5) Uma ama-bubbles eyenzeka ngesikhathi sokuchithwa, angasuswa ngokuma amahora angu-2-12 (isikhathi esiqondile sincike ekuvumelaneni kwesixazululo) noma ngokuhlanza nokucindezela, noma ngokungeza inani elifanele le-ejenti yokukhipha amagwebu.
5 i-hydroxypropyl methyl cellulose kumthamo we-putty powder?
I-HPMC ekusetshenzisweni kwangempela kwenani, ngokwesimo sezulu, izinga lokushisa, izinga le-calcium empunga yendawo, ifomula yempuphu ephuthiwe kanye nezidingo zamakhasimende zekhwalithi ehlukene, futhi kunomehluko ozungezile, ngokuvamile phakathi kwamakhilogremu angu-4-5.
6. Iyiphi i-viscosity efanele ye-hydroxypropyl methyl cellulose?
I-Putty powder ngokuvamile i-100000 ingaba, izidingo zodaka ziphakeme, kuya ku-150000 zinhle nje, futhi i-HPMC inendima ebaluleke kakhulu ukugcinwa kwamanzi, okulandelwa ukuqina. Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle, i-viscosity iphansi (7-8), kungenzeka futhi, yebo, i-viscosity inkulu, ukugcinwa kwamanzi okuhlobene kungcono, lapho i-viscosity ingaphezu kuka-100,000, i-viscosity yokugcinwa kwamanzi ayiningi.
7. Yiziphi izinto zokusetshenziswa eziphambili ze-hydroxypropyl methyl cellulose?
I-HPMCizinto zokusetshenziswa main: ukotini elicwengekile, chloromethane, propylene oxide, ezinye izinto zokusetshenziswa, ithebhulethi alkali, acid toluene.
8. I-Hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, indima eyinhloko, kungakhathaliseki ukuthi amakhemikhali?
Ku-putty powder, ukuqina, ukugcinwa kwamanzi kanye nokwakhiwa kwemisebenzi emithathu. Ukuqina, i-cellulose ingaqiniswa ukuze imiswe, ukuze ikhambi lihlale lifana phezulu naphansi indima yokulengiswa kokulwa nokugeleza. Ukugcinwa kwamanzi: yenza i-putty powder yome kancane, isiza se-calcium empunga esenzweni sokusabela kwamanzi. Ukwakhiwa: i-cellulose lubrication, ingenza i-putty powder inokwakhiwa okuhle. I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusekela kuphela.
9 .i-hydroxypropyl methyl cellulose i-non-ionic cellulose ether, ngakho yini i-non-ionic?
Ngokwemigomo ye-layman, izinto ezingenasici azibambi iqhaza ekuphenduleni kwamakhemikhali.
I-CMC(carboxymethyl cellulose) i-cationic cellulose, ngakho-ke ukuhlangana ne-calcium empunga kuzoba izinsalela zikabhontshisi.
10. Yiziphi izinkomba zobuchwepheshe eziyinhloko ze-hydroxypropyl methyl cellulose?
Okuqukethwe kwe-Hydroxypropyl
Okuqukethwe kwe-methyl
i-viscosity
umlotha
Ukuncipha kwesisindo esomile
11. Yini ehlobene nezinga lokushisa lejeli le-hydroxypropyl methyl cellulose?
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwe-methoxyl, ukwehla kokuqukethwe kwe-methoxyl, kukhuphuka izinga lokushisa lejeli.
I-12 putty powder drop powder kanye nobudlelwano be-hydroxypropyl methyl cellulose?
Uma i-HPMC ingagcini kahle amanzi, izodala impushana.
I-13 hydroxypropyl methyl cellulose ekusetshenzisweni kwe-putty powder, i-putty powder bubble yisiphi isizathu?
I-HPMC ku-putty powder, ukuqina, ukugcinwa kwamanzi nokwakhiwa kwezindima ezintathu, imbangela yebhamuza:
1. )Kwengezwa amanzi amaningi kakhulu.
2. )Isendlalelo esingezansi asomile, bese ukhuhla ungqimba kuso, okubuye kube lula ukubhamuza.
14. Uyini umehluko phakathi kwe-hydroxypropyl methyl cellulose emanzini abandayo ancibilika ngokushesha kanye ne-heat-soluble ohlelweni lokukhiqiza?
HPMC amanzi abandayo osheshayo uhlobo isixazululo emva ukwelashwa glyoxal surface, ifakwe emanzini abandayo zihlakazeke ngokushesha, kodwa hhayi ngempela ziyoncibilika, viscosity up, is ziyoncibilika. Uhlobo lwe-thermosoluble aluzange lwelashwe phezulu nge-glyoxal. Inani le-glyoxal likhulu, ukuhlakazeka kuyashesha, kodwa i-viscosity ihamba kancane, inani lincane, ngokuphambene nalokho.
15. Kuyini ngamaphunga e-hydroxypropyl methyl cellulose?
I-HPMC ekhiqizwa ngendlela ye-solvent yenziwe nge-toluene ne-isopropyl alcohol. Uma ukugeza kungalungile kakhulu, kuzoba khona ukunambitheka okusele. (Ukubuyiswa kokungathathi hlangothi kuyinqubo eyinhloko yephunga)
16. Ungakhetha kanjani i-hydroxypropyl methyl cellulose efanele ukusetshenziswa okuhlukile?
I-Putty powder: izidingo zokugcina amanzi aphezulu, ukuhambisana okuhle kokwakhiwa (ibanga elinconyiwe: 75AX100000)
Udaka olujwayelekile olusekelwe kusimende: ukugcinwa kwamanzi aphezulu, ukumelana nokushisa okuphezulu, i-viscosity esheshayo (ibanga elinconyiwe: 75AX150000)
Ukusetshenziswa kweglue yokwakha: imikhiqizo esheshayo, i-viscosity ephezulu. (Inombolo yomkhiqizo onconyiwe: 75AX200000S)
I-Gypsum mortar: ukugcinwa kwamanzi aphezulu, i-viscosity ephakathi naphansi, i-viscosity esheshayo (ibanga elinconyiwe: 75AX75000)
17. Sithini isiteketiso se-hydroxypropyl methyl cellulose?
I-HPMC noma i-MHPC i-alias hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether.
18. Uyini umehluko phakathi kwe-hydroxypropyl methyl cellulose kanyeMC?
I-MC i-methyl cellulose, iwukotini ocwengiwe ngemva kokwelashwa kwe-alkali, i-methane chloride njenge-ejenti e-etherifying, ngokusebenzisa uchungechunge lokusabela futhi yenziwe nge-cellulose ether, i-degree jikelele yokufaka esikhundleni ngu-1.6-2.0, izinga elihlukile le-substitution solubility lihlukile, lingokwe-non-ionic cellulose ether.
(1) Ukugcinwa kwamanzi kwe-methyl cellulose kuncike enanini layo elingeziwe, i-viscosity, ukucoleka kwezinhlayiyana nezinga lokuqedwa. Ngokuvamile, inani elingeziwe likhulu, ukucoleka kuncane, i-viscosity inkulu, izinga lokugcinwa kwamanzi liphezulu, inani elingeziwe linethonya elikhulu esilinganisweni sokugcinwa kwamanzi, izinga le-viscosity nokugcinwa kwamanzi alikho ngaphansi kunobudlelwano, izinga lokuchithwa lincike kakhulu kwidigri yokuguqulwa komhlaba kanye nezinhlayiyana zezinhlayiya ze-cellulose. I-Methyl cellulose ne-hydroxypropyl methyl cellulose kuma-cellulose ether ambalwa angenhla anezinga eliphezulu lokugcinwa kwamanzi.
(2) I-Methyl cellulose ingancibilika emanzini abandayo, amanzi ashisayo azoba nzima ukuncibilika, isisombululo saso samanzi ku-pH = 3-12 ububanzi izinzile kakhulu, nesitashi, njll., futhi ama-surfactants amaningi anokuhambisana okuhle, lapho izinga lokushisa lifinyelela izinga lokushisa le-gelation, kuyoba khona i-gelation phenomenon.
(3) Ukushintsha kwezinga lokushisa kuzothinta kakhulu izinga lokugcinwa kwamanzi e-methyl cellulose, ngokuvamile, uma izinga lokushisa liphakeme, ukugcinwa kwamanzi kubi kakhulu. Uma izinga lokushisa lodaka lidlula ama-degree angu-40, ukugcinwa kwamanzi kwe-methyl cellulose kuyoba kubi kakhulu, okuthinta kakhulu ukwakhiwa kodaka.
(4)I-Methyl cellulosekunethonya elisobala ekwakhiweni nasekunamatheleni kodaka. Ukunamathela lapha kubhekisela emandleni okunamathela azwakala phakathi kwethuluzi kanye ne-substrate yodonga yisisebenzi, okungukuthi, ukumelana kwe-shear kodaka. Ukunamathela kukhulu, ukumelana kwe-shear kodaka kukhulu, amandla adingwa abasebenzi ngesikhathi sokusebenzisa nawo makhulu, futhi ukwakhiwa kodaka kumpofu.
Isikhathi sokuthumela: Apr-25-2024